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Farnesyl transferase inhibitors in myeloid disorders
Jeffrey E Lancet1, Judith E Karp
1H. Lee Moffitt Cancer Center & Research Institute, University of South Florida, Tampa, Florida 33612, USA.
Abstract:
Farnesyl transferase inhibitors (FTIs), a novel class of anticancer agents that competitively inhibit farnesyl protein transferase, are currently being developed and tested across a wide range of human cancers. Myeloid malignancies are reasonable disease targets in that they likely overexpress relevant biologic targets, such as Ras, mitogen-activated protein kinase (MAPK), or AKT. Several phase I clinical trials using FTIs in myeloid malignancies have been performed, demonstrating enzyme target inhibition, low toxicity, and anticancer activity. Many phase II trials are now under way, aiming to assess the response rate and to identify the actual downstream signal transduction targets that may be modified by these agents. It is expected that results from these trials will optimize the role of FTIs in patients with myeloid disorders by identifying patient and disease characteristics that will predict for response, facilitating their incorporation into current therapeutic strategies and providing insight into effective methods of combining FTIs with other antineoplastics.
Insights
Farnesyl transferase inhibitors (FTIs) show promise as anticancer agents for myeloid malignancies. Clinical trials demonstrate target inhibition, low toxicity, and anticancer activity, with ongoing studies to optimize their therapeutic role.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Farnesyl transferase inhibitors (FTIs) are a novel class of anticancer agents.
- Myeloid malignancies are potential targets due to overexpression of Ras, MAPK, and AKT pathways.
- FTIs competitively inhibit farnesyl protein transferase.
Purpose of the Study:
- To evaluate the efficacy and safety of FTIs in myeloid malignancies.
- To assess response rates and identify downstream signaling targets of FTIs.
- To optimize the role of FTIs in current therapeutic strategies for myeloid disorders.
Main Methods:
- Phase I and II clinical trials were conducted.
- Enzyme target inhibition and toxicity were assessed.
- Downstream signal transduction targets are being identified.
Main Results:
- Phase I trials demonstrated enzyme target inhibition, low toxicity, and anticancer activity.
- Ongoing Phase II trials aim to assess response rates.
- Identification of modified downstream targets is in progress.
Conclusions:
- FTIs exhibit promising anticancer activity and favorable toxicity profiles in myeloid malignancies.
- Further research will identify predictive biomarkers and optimal combination strategies.
- FTIs are expected to be incorporated into therapeutic strategies for myeloid disorders.
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